Table Bubble Plot (Github Punch Card)

View this example in the online editor

Vega-Lite JSON Specification

{
  "$schema": "https://vega.github.io/schema/vega-lite/v2.json",
  "data": { "url": "data/github.csv"},
  "mark": "circle",
  "encoding": {
    "y": {
      "field": "time",
      "type": "ordinal",
      "timeUnit": "day"
    },
    "x": {
      "field": "time",
      "type": "ordinal",
      "timeUnit": "hours"
    },
    "size": {
      "field": "count",
      "type": "quantitative",
      "aggregate": "sum"
    }
  }
}